I don't believe we have determined with "flavor" of Power Civil you are running. When you export to native, is it wanting to write to an ALG or a GPK file?
In either case, there is the tool for plan and profile generation, but although similar, have enough differences to make someone like me, an InRoads (ALG) expert, unable to respond to someone using the GPK based PowerCivil.
How we got here, You have to understand Bentley's Civil history.
Like Autodesk acquiring Softdesk and CAiCE, Bentley acquired GEOPAK, MX and InRoads over the last several years. Unlike Autodesk, Bentley elected to maintain all three platforms and at the same time, begin developing new tools that were made available to all three platforms. These tools worked identically in each platform, but also continued to work with the users "native" software. This was their migration strategy towards a single unified Bentley Civil platform.
The Ss3 release formally introduced this unified software: Open Roads (technology) and began the process of making these new tools the primary tools. As before, they still permitted users to avail themselves of most of the native tools. And as not 100% of the capabilities of the native tools are yet included as part of the Open Roads Bentley Civil tools, users are required to rely on some native tools.
The Plan and Profile Generator/Sheet tools are still part of these required native tools. Which is why we need to know what your native platform is. Telling us that you use PowerCivil is not enough information to know that. (BTW, there are now Power InRoads and Power GEOPAK software which do more than PowerCivil, and their names obviously reveal their underlying native platform.)
While these are not as dynamic as Civil 3D, they are still stable and very useful. Often, it is not necessary to re-cut the sheets when minor changes to a vertical alignment are made. But if you do have to re-cut sheets, the setup can be recalled and reused with minimal reworking of the various settings. And to redisplay any automated annotations does only take a few seconds, as you can do an entire profile at once, even though it is broken up for sheets.
There are videos that demonstrate both products under the support solutions tab of this forum. To know which to watch, you too need to know the native platform.
I don't know if you are working where you still need to use Civil 3D, but I think you will find that some features of PowerCivil are better than tools in Civil 3D and some tools in Civil 3D are better. I am in the reverse situation to yours. Only not only do I need to learn to use Civil 3D, I also need to learn to manage Civil 3D for my end users. And in that arena, the Bentley tools win hands down. Being able to work in both is a good skill set to have.